PREFACE – INSTITUTE OF EXCELLENCE
PERCENTAGE REVISION
1. Conver ng Frac ons and Decimals to Percentages
1. Convert the frac on 3/4 into a percentage.
2. What is 0.85 as a percentage?
3. How would you express 7/10 as a percentage?
4. Convert the frac on 2/5 into a percentage.
5. Change the decimal 0.35 into a percentage.
6. What is 1/2 in percentage form?
7. Convert the decimal 0.09 into a percentage.
8. Express 5/8 as a percentage.
9. How would you convert 0.625 into a percentage?
10. What is 1.5 as a percentage?
2. Conver ng Percentages to Frac ons and Decimals
11. Convert 75% into a frac on.
12. What is 60% as a decimal?
13. How would you express 45% as a frac on in its simplest form?
14. Convert 32% into a decimal.
15. Change 85% into a frac on.
16. What is 5% in decimal form?
17. Convert 120% into a frac on.
18. Express 25% as a decimal.
19. How would you convert 0.8% into a frac on?
20. What is 0.05% as a decimal?
3. Finding the Percentage of a Number
21. What is 20% of 150?
22. Calculate 15% of 80.
23. If you have 250 items and 10% are defec ve, how many are defec ve?
24. What is 35% of 200?
25. How much is 50% of 400?
26. If 70% of a number is 210, what is the number?
27. Calculate 25% of 60.
28. What is 12% of 500?
29. Find 80% of 75.
30. If a store sells 40 items and 25% are sold on a discount, how many items are discounted?
4. Applica on of Percentages Through Real-Life Word Problems
31. A shirt costs $50, and a store offers a 20% discount. What is the sale price?
32. If you save 15% on a $200 purchase, how much money do you save?
33. A restaurant bill is $120, and you want to leave a 18% p. How much is the p?
34. A student scores 72 out of 90 on a test. What percentage did the student score?
35. If a car’s value decreases by 10% each year, what will be the value a er one year if its ini al
value is $20,000?
36. You receive a 5% commission on sales. If you sell $5,000 worth of goods, how much is your
commission?
37. A popula on of a town increases by 4% every year. If the current popula on is 50,000, what
will it be next year?
38. A bank offers an interest rate of 3% per annum. How much interest will you earn in a year on
a deposit of $10,000?
39. If you purchase a laptop for $800 and there is a 7% sales tax, what is the total cost?
40. A company's revenue increased by 25% from last year. If the revenue last year was
$1,000,000, what is the new revenue?
5. Calcula ng Change in Percentage
41. The price of a stock increased from $120 to $150. What is the percentage increase?
42. If a popula on decreases from 10,000 to 8,500, what is the percentage decrease?
43. Calculate the percentage change if a product’s price drops from $30 to $25.
44. A team’s score improves from 50 to 75. What is the percentage increase?
45. If the number of students in a class increases from 25 to 30, what is the percentage increase?
46. A city’s popula on decreased from 2 million to 1.8 million. What is the percentage decrease?
47. The cost of a meal increased from $15 to $18. What is the percentage change?
48. If a student’s grade drops from 85 to 70, what is the percentage decrease?
49. Calculate the percentage change if the quan ty of an item increases from 40 to 60.
50. If a salary is reduced from $4,000 to $3,200, what is the percentage decrease?
